Which of the Following Is a Difference Between True Experiments

Multiple Choice

Which of the following is a difference between true experiments and quasi-experiments?

A) Quasi-experiments do not use random assignment.
B) Quasi-experiments do not involve manipulated variables.
C) Quasi-experiments cannot have comparison groups.
D) Quasi-experiments cannot have pretest measures.
E) All of the above are differences between true experiments and quasi-experiments.